Trellix DLP
by Trellix
Covered
7
controls
Partial
3
controls
Gaps
3
controls
Overview
Trellix DLP by Trellix is a data protection solution that covers 7 NIST 800-171 controls (6% total coverage). It addresses key requirements in the data protection domain for defense contractors pursuing CMMC compliance.
Implementation Notes
Deploy Trellix DLP with FIPS-validated configurations. Integrate with your SIEM for centralized audit logging. Review partial controls quarterly to identify supplementary tooling needs.
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Implementation Guidance for Trellix DLP
To configure Trellix DLP for NIST 800-171 compliance, focus on SC-8 (Transmission Confidentiality) by enabling network DLP policies that inspect and encrypt sensitive data in transit. Configure data discovery rules to identify CUI patterns matching DFARS requirements and set automatic encryption for emails containing classified markings. For SC-28 (Protection of Information at Rest), implement endpoint DLP agents with device control policies preventing unauthorized USB transfers and requiring encryption for removable media containing CUI. Configure SC-13 (Cryptographic Protection) by enforcing AES-256 encryption policies for data at rest and TLS 1.2+ for data in motion through DLP gateway appliances. For MP-7 (Media Protection), establish removable media control policies that block unauthorized devices and require admin approval for business-justified transfers. Generate assessment evidence through DLP's compliance reporting module, creating monthly dashboards showing policy violations, remediation actions, and encryption coverage metrics. Export incident logs in SIEM-compatible formats for correlation with other security tools. Integrate with Microsoft 365 for seamless email protection and with endpoint detection tools like CrowdStrike for comprehensive data protection. Common misconfigurations include overly permissive exception policies that bypass CUI protection, insufficient tuning of data classification rules leading to false positives, failure to enable logging for all DLP events required for audit trails, and inadequate integration with identity management systems causing policy bypass scenarios that C3PAOs frequently identify during assessments.
Gap Analysis & Compensating Controls
Trellix DLP does not cover AC-6 (Least Privilege), requiring additional privileged access management solutions like CyberArk or BeyondTrust to control administrative access to CUI systems. The gap in SI-4 (Information System Monitoring) necessitates complementary SIEM tools like Splunk or QRadar to provide comprehensive security event correlation beyond DLP's data-focused monitoring. Missing coverage for IA-2 (Identification and Authentication) requires implementing multi-factor authentication solutions such as Okta or Ping Identity for user verification accessing CUI systems. Document these gaps in your System Security Plan under compensating controls, noting that network segmentation and additional monitoring tools provide defense-in-depth for AC-6 limitations. Create POA&M entries with specific timelines for implementing PAM solutions within 180 days and SIEM integration within 90 days. Prioritize closing the SI-4 gap first as continuous monitoring receives highest weight in CMMC assessments, followed by IA-2 implementation which directly impacts user access controls. The AC-6 gap can be temporarily mitigated through enhanced logging and manual review processes while procuring dedicated PAM solutions. These compensating controls must be clearly documented with evidence of effectiveness to satisfy C3PAO requirements during formal assessments.
Compliance Cost Estimate
Trellix DLP licensing ranges from $35-65 per user annually depending on deployment size and feature requirements, with enterprise editions supporting advanced classification costing up to $85/user/year. Implementation costs typically range $50,000-150,000 for mid-size defense contractors including professional services, policy development, and initial tuning. Ongoing monitoring requires 0.5-1.0 FTE security analyst time monthly for policy maintenance, incident response, and compliance reporting activities. Compared to competitors like Forcepoint DLP ($40-70/user) or Microsoft Purview ($20-45/user), Trellix provides superior network visibility but at higher total cost of ownership. Annual maintenance and support add 20-25% of license costs, making three-year TCO approximately $150-250 per protected user including all operational expenses.
Compliance Cross-References
Trellix DLP directly supports DFARS 252.204-7012 requirements for safeguarding covered defense information by preventing unauthorized disclosure through network, endpoint, and email channels. For CMMC Level 2, it satisfies Assessment Objectives SC.L2-3.13.8 (implement cryptographic mechanisms) and SC.L2-3.13.11 (employ FIPS-validated cryptography) when properly configured with approved encryption algorithms. The solution addresses CMMC domain SC (System and Communications Protection) practices but requires additional tools for complete AC (Access Control) and AU (Audit and Accountability) domain coverage. FedRAMP controls SC-8, SC-13, and SC-28 are satisfied through Trellix DLP's encryption and data protection capabilities when deployed in approved cloud environments. However, achieving full CMMC compliance requires supplementing with identity management for AC.L2-3.1.1 through AC.L2-3.1.22 and comprehensive logging solutions for AU.L2-3.3.1 through AU.L2-3.3.9. C3PAOs will verify that DLP policies enforce encryption requirements and generate appropriate audit evidence, making proper configuration documentation critical for successful assessments.
Frequently Asked Questions
How many NIST 800-171 controls does Trellix DLP cover?
Trellix DLP covers 7 of 110 NIST 800-171 controls (6%), with 3 partially covered and 3 gaps.
Can Trellix DLP alone satisfy CMMC Level 2?
No single tool covers all 110 NIST 800-171 controls. Trellix DLP covers 6% and should be part of a layered security stack addressing the remaining controls.
What controls does Trellix DLP not cover?
Trellix DLP does not cover controls ia-3-5-1, pe-3-10-1, cm-3-4-1. These require supplementary solutions such as physical security controls, additional access management, or media protection tools.
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